如何将 javascript 对象转换成 json字符串

javascript 对象转换成 json字符串[js对象转换成json字符串]

使用$.toJSON(Object)就可以转换了，转换之前先引入jquery.json.js

(function($) {

$.toJSON = function(o)

{

if (typeof(JSON) == 'object' JSON.stringify)

return JSON.stringify(o);

var type = typeof(o);

if (o === null)

return "null";

if (type == "undefined")

return undefined;

if (type == "number" || type == "boolean")

return o + "";

if (type == "string")

return $.quoteString(o);

if (type == 'object')

{

if (typeof o.toJSON == "function")

return $.toJSON( o.toJSON() );

if (o.constructor === Date)

{

var month = o.getUTCMonth() + 1;

if (month 10) month = '0' + month;

var d*** = o.getUTCDate();

if (d*** 10) d*** = '0' + d***;

var year = o.getUTCFullYear();

var hours = o.getUTCHours();

if (hours 10) hours = '0' + hours;

var minutes = o.getUTCMinutes();

if (minutes 10) minutes = '0' + minutes;

var seconds = o.getUTCSeconds();

if (seconds 10) seconds = '0' + seconds;

var milli = o.getUTCMilliseconds();

if (milli 100) milli = '0' + milli;

if (milli 10) milli = '0' + milli;

return '"' + year + '-' + month + '-' + d*** + 'T' +

hours + ':' + minutes + ':' + seconds +

'.' + milli + 'Z"';

}

if (o.constructor === Arr***)

{

var ret = [];

for (var i = 0; i o.length; i++)

ret.push( $.toJSON(o[i]) || "null" );

return "[" + ret.join(",") + "]";

}

var pairs = [];

for (var k in o) {

var name;

var type = typeof k;

if (type == "number")

name = '"' + k + '"';

else if (type == "string")

name = $.quoteString(k);

else

continue; //skip non-string or number keys

if (typeof o[k] == "function")

continue; //skip pairs where the value is a function.

var val = $.toJSON(o[k]);

pairs.push(name + ":" + val);

}

return "{" + pairs.join(", ") + "}";

}

};

$.evalJSON = function(src)

{

if (typeof(JSON) == 'object' JSON.parse)

return JSON.parse(src);

return eval("(" + src + ")");

};

$.secureevalJSON = function(src)

{

if (typeof(JSON) == 'object' JSON.parse)

return JSON.parse(src);

var filtered = src;

filtered = filtered.replace(/\["\/bfnrtu]/g, '@');

filtered = filtered.replace(/"[^"\nr]*"|true|false|null|-?d+(?:.d*)?(?:[eE][+-]?d+)?/g, ']');

filtered = filtered.replace(/(?:^|:|,)(?:s*[)+/g, '');

if (/^[],:{}s]*$/.test(filtered))

return eval("(" + src + ")");

else

throw new SyntaxError("Error parsing JSON, source is not valid.");

};

$.quoteString = function(string)

{

if (string.match(_escapeable))

{

return '"' + string.replace(_escapeable, function (a)

{

var c = _meta[a];

if (typeof c === 'string') return c;

c = a.charCodeAt();

return '\u00' + Math.floor(c / 16).toString(16) + (c % 16).toString(16);

}) + '"';

}

return '"' + string + '"';

};

var _escapeable = /["\x00-x1fx7f-x9f]/g;

var _meta = {

'b': '\b',

't': '\t',

'n': '\n',

'f': '\f',

'r': '\r',

'"' : '\"',

'\': '\\'

};

})(jQuery);

js怎么把list转换json字符串？

1.List list = new Arr***List。

2.list.add(测试1)。

3.list.add(测试2)。

4.list.add(测试3)。

5.JSONArr*** jsonArr*** JSONArr***.fromObject(list)。

6.System.out.println(jsonArr***.toString。

7.这边要导包需要jsonlib.jarnet.sf.json.JSONArr***。

用java初始化一个list,向list中添加值,并输出list中的值:

1.import java.util.

2.public class .

3. public static void main(String arg[]) .

4. List lis = new Arr***list.

5. lis.add("wo").

6. lis.add("shi").

7. lis.add("wang").

8.for(int i=0;ilis.size(); i++).

9. System.out.print(lis.get(i)+"").

js怎么把数组转换成json字符串

1、javascript里面的数组都是关联数组吧？js对象的本质就是关联数组。索引数组也就是常说的数组，数组是对象，所以数组的本质也是关联数组，但通常没人这么说。2、唯一区别就是：索引数组的索引只能是0和正整数，但它是有序的。关联数组的索引很宽松，但关联数组是无序的，就这个。3、json对象是严格版本的关联数组。4、至少在chrome下，索引数组和关联数组的速度是一样的。5、索引数组的好处就是格式简单，关联数组的好处是键可以任意定义。现代浏览器中提供了JSON.stringify()方法将数组，对象转成json。JSON.stringify把一个对象转换成json字符串，JSON.parse把一个json字符串解析成对象。不支持的可以引入json2.js$.fn.stringifyArr***=function(arr***){returnJSON.stringify(arr***)}$.fn.parseArr***=function(arr***){returnJSON.parse(arr***)}然后调用：$("").stringifyArr***(arr***)

JS，实现一维数组JSON树结构的转换

1、方法思路使用js数组自带的filter()方法；数据格式要求，父子节点通过，Id，ParentId进行关联。默认父结节id为0。

样例数据：var jsonData = [{"id":"1","pid":"0","name":"家用电器"}, {"id":"4","pid":"1","name":"大家电"}, {"id":"5","pid":"1","name":"生活电器"}, {"id":"2","pid":"0","name":"服饰"}, {"id":"3","pid":"0","name":"化妆"}, {"id":"7","pid":"4","name":"空调"}, {"id":"8","pid":"4","name":"冰箱"}, {"id":"9","pid":"4","name":"洗衣机"}, {"id":"10","pid":"4","name":"热水器"}, {"id":"11","pid":"3","name":"面部护理"}, {"id":"12","pid":"3","name":"口腔护理"}, {"id":"13","pid":"2","name":"男装"}, {"id":"14","pid":"2","name":"女装"}, {"id":"15","pid":"7","name":"海尔空调"}, {"id":"16","pid":"7","name":"美的空调"}, {"id":"19","pid":"5","name":"加湿器"}, {"id":"20","pid":"5","name":"电熨斗"}];

2、实现方法：

function creatTreeData(list){

var clonelist = JSON.parse(JSON.stringify(list));

var result =clonelist.filter(function(father){

var childlist = clonelist.filter(function(child){

return father.id= child.pid;

});

if(childlist.length0){

father.children=childlist;

}

return father.pid ==0;

});

return result;

}

3、方法封装

function treeData(list,id,pid,children){

var clone = JSON.parse(JSON.stringify(list));

return clone.filter(function(father){

var childlist =clone.filter(function(child){

return father[id]==child[pid];

});

if(childlist.length0){

father[children]=childlist;

}

return father[pid]==0;

});

}

js转json的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于js转json字符、js转json的信息别忘了在本站进行查找喔。